Snow Squall Warning 2, NWS Pittsburgh, PA

698 
WWUS51 KPBZ 151502
SQWPBZ

Snow Squall Warning
National Weather Service Pittsburgh PA
1101 AM EDT Thu Mar 15 2018

PAC121-151511-
/O.CAN.KPBZ.SQ.W.0002.000000T0000Z-180315T1530Z/
Venango PA-
1101 AM EDT Thu Mar 15 2018

...THE SNOW SQUALL WARNING FOR EAST CENTRAL VENANGO COUNTY IS
CANCELLED...

The snow squall which prompted the warning has moved out of the 
warned area. Therefore, the snow squall warning has been cancelled.

LAT...LON 4142 7909 4134 7909 4135 7906 4135 7905
      4136 7904 4135 7902 4127 7901 4100 7916
      4101 7921 4105 7921 4105 7923 4102 7927
      4106 7955 4120 7946 4130 7942 4143 7939
TIME...MOT...LOC 1501Z 275DEG 29KT 4141 7938 4129 7942 4107 7952 

$$

PAC031-053-065-151530-
/O.CON.KPBZ.SQ.W.0002.000000T0000Z-180315T1530Z/
Jefferson PA-Clarion PA-Forest PA-
1101 AM EDT Thu Mar 15 2018

...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 1130 AM EDT FOR
NORTHWESTERN JEFFERSON...EASTERN CLARION AND SOUTH CENTRAL FOREST
COUNTIES...

At 1101 AM EDT, a dangerous snow squall was located along a line
extending from 7 miles southeast of Tionesta to near Clarion to near
Rimersburg, moving east at 35 mph.

HAZARD...Poor visibility in snow and blowing snow. Wind gusts up to 
         20 mph.

SOURCE...Radar indicated.

IMPACT...Expect hazardous road conditions.

This includes  Interstate 80 in Pennsylvania between mile markers 59
and 80.
 
Locations impacted include...
Clarion, Brookville, Sligo, Strattanville, Summerville, Limestone,
Hawthorn, Corsica, Sigel, Fisher, Leeper and Worthville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.

&&

LAT...LON 4142 7909 4134 7909 4135 7906 4135 7905
      4136 7904 4135 7902 4127 7901 4100 7916
      4101 7921 4105 7921 4105 7923 4102 7927
      4106 7955 4120 7946 4130 7942 4143 7939
TIME...MOT...LOC 1501Z 275DEG 29KT 4141 7938 4129 7942 4107 7952 

$$

TAX

130 
WWUS51 KPBZ 151519
SQWPBZ

Snow Squall Warning
National Weather Service Pittsburgh PA
1119 AM EDT Thu Mar 15 2018

PAC031-053-065-151530-
/O.CON.KPBZ.SQ.W.0002.000000T0000Z-180315T1530Z/
Jefferson PA-Clarion PA-Forest PA-
1119 AM EDT Thu Mar 15 2018

...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 1130 AM EDT FOR
NORTHWESTERN JEFFERSON...SOUTHEASTERN CLARION AND SOUTH CENTRAL
FOREST COUNTIES...

At 1119 AM EDT, an intense snow squall was located along a line 
extending from 7 miles southwest of Marienville to 7 miles northeast 
of Clarion to near New Bethlehem, moving east at 35 mph.

HAZARD...Poor visibility in snow and blowing snow. Wind gusts up to 
         20 mph.

SOURCE...Radar indicated.

IMPACT...Expect hazardous road conditions.

This includes  Interstate 80 in Pennsylvania between mile markers 68
and 80.
 
Locations impacted include...
Brookville, Summerville, Limestone, Hawthorn, Corsica, Sigel, Fisher,
Worthville, Clarington, Clear Creek State Park and Cook Forest State
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.

&&

LAT...LON 4142 7909 4134 7909 4135 7906 4135 7905
      4136 7904 4135 7902 4127 7901 4100 7916
      4101 7921 4105 7921 4105 7923 4102 7927
      4103 7936 4117 7931 4124 7927 4142 7923
TIME...MOT...LOC 1519Z 275DEG 29KT 4140 7923 4128 7927 4106 7937 

$$

TAX

257 
WWUS51 KPBZ 151527
SQWPBZ

Snow Squall Warning
National Weather Service Pittsburgh PA
1124 AM EDT Thu Mar 15 2018

PAC031-053-065-151534-
/O.EXP.KPBZ.SQ.W.0002.000000T0000Z-180315T1530Z/
Jefferson PA-Clarion PA-Forest PA-
1124 AM EDT Thu Mar 15 2018

...THE SNOW SQUALL WARNING FOR NORTHWESTERN JEFFERSON...SOUTHEASTERN
CLARION AND SOUTH CENTRAL FOREST COUNTIES WILL EXPIRE AT 1130 AM
EDT...

The snow squall which prompted the warning has weakened. Therefore,
the snow squall warning will be allowed to expire.

LAT...LON 4142 7909 4134 7909 4135 7906 4135 7905
      4136 7904 4135 7902 4127 7901 4100 7916
      4101 7921 4105 7921 4105 7923 4102 7927
      4103 7936 4117 7931 4124 7927 4142 7923
TIME...MOT...LOC 1524Z 275DEG 29KT 4140 7922 4128 7926 4106 7936 

$$

TAX

Area Forecast Discussion
National Weather Service Pittsburgh PA
1017 AM EDT Thu Mar 15 2018

.SYNOPSIS...
Periodic snow showers and cold temperatures are expected the
rest of the week under upper level low pressure.

&&

.NEAR TERM /THROUGH FRIDAY/...
With the 10am update, increased pops across northern counties
where a snow squall has developed and is moving east. In
addition, also added heavy snow wording along the squall. Other
changes to the forecast were minimal. Previous discussion
follows.

Drier air will once again take hold. This will limit snow
showers through much of the morning and early afternoon, south
of the PA Turnpike. North of the Turnpike, snow showers will
remain fairly common as there is a little better moisture
availability below 850mb.

Tonight, another shot of cold advection will generate snow
showers nearly areawide. As these showers expand southward,
light accumulation and brief reduction in visibility is
possible. No significant accumulation is expected outside of
the ridges and north of I-80 where a couple inches looks
possible through Friday until snow showers diminish with
building high pressure. Areas with accumulation should remain
under advisory criteria on average...but localized areas >3"
will be possible at higher elevations favoring northwest flow.
Well below normal temperatures will continue through Friday.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY/...
Dry conditions will be in place by Friday night before a
relatively quick moving wave returns precipitation to the
forecast area on Saturday. Guidance appears to show slightly
better consensus on track...with areas south of Pittsburgh most
likely to see precipitation. A brief period of light freezing
rain at onset remains a possibility Saturday morning so have
included a mention in the HWO...but based off deterministic
runs, ensembles, analogs and considering the short duration...at
this time it looks like it would be a trace at best. Most
locations should rise into the 40s on Saturday.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
Minimal change was needed in the extended with reasonable
continuity in model guidance. The next disturbance looks to
begin to impact the region later on Monday...with continued
unsettled conditions and below normal temperatures through
Thursday as longwave trough deepens again over the northeast.

&&

.AVIATION /14Z THURSDAY THROUGH MONDAY/...
VFR conditions expected through most of the day. A cold front
will pass through the area during the late morning and afternoon
hours. Restrictions are expected at FKL and DUJ during the
morning and early afternoon hours with a snow squall, however,
widespread restrictions are not expected until after the
forecast period.

OUTLOOK...
Periodic restrictions are likely through Friday with persistent
upper troughing and cold NW flow.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...None.
OH...None.
PA...None.
WV...None.

&&

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
520 AM EDT Thu Mar 15 2018

OHZ039>041-048>050-PAZ007>009-013>016-020>023-029-073-074-WVZ001-002-
160930-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson-Mercer-
Venango-Forest-Lawrence-Butler-Clarion-Beaver-Allegheny-Armstrong-
Indiana-Washington-Westmoreland-Westmoreland Ridges-Hancock-Brooke-
520 AM EDT Thu Mar 15 2018

This Hazardous Weather Outlook is for east central Ohio, northwest
Pennsylvania, southwest Pennsylvania, west central Pennsylvania,
western Pennsylvania, northern West Virginia and northern panhandle
of West Virginia.

.DAY ONE...Today and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MDZ001-WVZ511>514-160930-
Garrett-Preston-Eastern Preston-Western Tucker-Eastern Tucker-
520 AM EDT Thu Mar 15 2018

This Hazardous Weather Outlook is for western Maryland and northern
West Virginia.

.DAY ONE...Today and Tonight.

1 to 3 inches of snow is expected today. If the potential for higher
accumulations increase, a winter weather advisory may be needed.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a slight chance of a brief period of freezing rain Saturday
morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ057>059-068-069-PAZ031-075-076-WVZ003-004-012-021-509-510-160930-
Muskingum-Guernsey-Belmont-Noble-Monroe-Greene-Fayette-
Fayette Ridges-Ohio-Marshall-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-
520 AM EDT Thu Mar 15 2018

This Hazardous Weather Outlook is for east central Ohio, southwest
Pennsylvania, northern West Virginia and northern panhandle of West
Virginia.

.DAY ONE...Today and Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a slight chance of a brief period of freezing rain Saturday
morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Special Weather Statement
National Weather Service Pittsburgh PA
929 AM EDT THU MAR 15 2018

OHZ041-PAZ007>009-013>015-020-022-151445-
Columbiana-Armstrong-Forest-Butler-Clarion-Venango-Lawrence-Mercer-
Beaver-
929 AM EDT THU MAR 15 2018

...AN INTENSE SNOW SQUALL WILL AFFECT NORTHEASTERN COLUMBIANA...
MERCER...NORTHEASTERN BEAVER...VENANGO...LAWRENCE...BUTLER...
NORTHWESTERN ARMSTRONG...WESTERN CLARION AND WESTERN FOREST
COUNTIES...

At 928 AM EDT, an intense snow squall was located along a line
extending from Meadville to 7 miles northeast of Hermitage to near
Boardman. Movement was east at 30 mph. If this squall intensifies
further, a Snow Squall Warning may be needed.

Locations impacted include...
New Castle...                     Hermitage...
Butler...                         Oil City...
Grove City...                     Franklin...
Knox...                           Ellwood City...
Homeacre-Lyndora...               Sugarcreek...
Shanor-Northvue...                Meridian...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 1 and 6.
  Interstate 79 in Pennsylvania between mile markers 60 and 109.
  Interstate 80 in Pennsylvania between mile markers 2 and 60.

Use caution if you must travel through this squall. Rapid changes in
visibility and road conditions are likely to lead to accidents.
Consider delaying travel until the squall passes.

LAT...LON 4118 7942 4075 7980 4090 8057 4090 8052
      4114 8052 4149 8029 4149 8000 4162 7983
      4163 7924
TIME...MOT...LOC 1328Z 278DEG 27KT 4166 8011 4128 8033 4098 8058